1
我正在学习Java Streams并想用java 8功能替换下面的代码。用Java流替换内部for循环
我能够使用stream.filter()和stream.map功能,但我无法用java 8功能替换下面的代码。
List<Subject> subjects= null;
Set<SubjectData> subjectData= new SubjectData();
for (String name: studentNames)
{
//subjects = student.getSubjects(name);
// consider instead of above line , which returns a collection of <Subject>
for (Subject subject : subjects)
{
subjectData.add(new SubjectData(subject.syllabus(), subject.code()));
}
}
任何指针将不胜感激
当然,你的意思是'new HashSet <>()'? –
'学生'从哪里来? –
yes此代码的输出应为所有学生返回的集合(存在于外循环中) –
Mahiz